Data Structures Algorithms Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Data Structures Algorithms. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - In a min-heap:
A - parent nodes have values greater than or equal to their childs
B - parent nodes have values less than or equal to their childs
Answer : A
Explanation
In a min heap, parents always have lesser or equal values than that of their childs.
Q 2 - What data structure is used for depth first traversal of a graph?
Answer : B
Explanation
Stack is used for depth first traversal whereas queue is used for breadth first traversal
Answer : D
Explanation
Minimum number of queues required for priority queue implementation is two. One for storing actual data and one for storing priorities.
Q 4 - What is not true about insertion sort?
A - Exhibits the worst case performance when the initial array is sorted in reverse order.
B - Worst case and average case performance is Ο(n2)
C - Can be compared to the way a card player arranges his card from a card deck.
Answer : D
Explanation
All given options are true about insertion sort.
Q 5 - Which of the below given series is Non-Increasing Order −
Answer : C
Explanation
A sequence of values is said to be in non-increasing order, if the successive element is less than or equal to its previous element in the sequence.
Q 6 - In context with time-complexity, find the odd out −
A - Deletion from Linked List.
Answer : D
Explanation
Binary heap heapify operation has time-complexity of Ο(n), while other operations have time-complexity of Ο(1) only.
Q 7 - The Θ notation in asymptotic evaluation represents −
Answer : A
Explanation
Θ represents average case. Ο represents worst case and Ω represents base case.
Q 8 - Heap is an example of
Answer : A
Explanation
Heap maintains itself to meet all the requirements of complete binary tree.
Q 9 - Binary search tree is an example of complete binary tree with special attributes.
A - BST does not care about complete binary tree properties.
B - BST takes care of complete binary tree properties.
Answer : A
Explanation
BST does not care about complete binary tree properties.
Q 10 - Apriori analysis of an algorithm assumes that −
A - the algorithm has been tested before in real environment.
B - all other factors like CPU speed are constant and have no effect on implementation.
Answer : B
Explanation
Efficiency of algorithm is measured by assuming that all other factors e.g. processor speed, are constant and have no effect on implementation.
